author | Brian Utterback <Brian.Utterback@Oracle.COM> |
Wed, 27 Jul 2011 10:37:00 -0700 | |
changeset 433 | 5de96cdbdfcb |
parent 181 | 87e11e685b1f |
permissions | -rw-r--r-- |
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'\" te |
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.\" CDDL HEADER START |
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.\" |
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.\" The contents of this file are subject to the terms of the |
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.\" Common Development and Distribution License (the "License"). |
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.\" You may not use this file except in compliance with the License. |
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.\" |
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.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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.\" or http://www.opensolaris.org/os/licensing. |
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.\" See the License for the specific language governing permissions |
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.\" and limitations under the License. |
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.\" |
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.\" When distributing Covered Code, include this CDDL HEADER in each |
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.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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.\" If applicable, add the following below this CDDL HEADER, with the |
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.\" fields enclosed by brackets "[]" replaced with your own identifying |
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.\" information: Portions Copyright [yyyy] [name of copyright owner] |
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.\" |
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.\" CDDL HEADER END |
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.\" |
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.\" Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. |
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.\" |
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.TH "ntptime" "1M" "" "" "System Administration Commands" |
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.SH NAME |
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ntptime \- Display Kernel Time Variables. |
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.SH SYNOPSIS |
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.LP |
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.n |
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\fB/usr/sbin/ntptime\fR [\fB-chr\fR] [\fB-e\fR \fIest_error\fR] [\fB-f\fR \fIfrequency\fR] |
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[\fB-m\fR \fImax_error\fR] [\fB-o\fR \fIoffset\fR] [\fB-s\fR \fIstatus\fR] [\fB-t\fR \fItime_constant\fR] |
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.fi |
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.SH "DESCRIPTION" |
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This program is used to display or set the kernel variables used by NTP as described in the documentation at |
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file:///usr/share/doc/ntp/kern.html entitled "A Kernel Model for Precision Timekeeping". A similar display can |
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be obtained using the \fBntpdc\fP program and \fBkerninfo\fP command. The actual meaning of these variables |
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is rather difficult to understand, but the \fBntptime\fP program is primarily useful to determine if the variables |
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are set at all or to clear them if they are. |
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.SH "OPTIONS" |
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.TP |
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.BR "-c" |
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Display the time taken to call ntp_gettime (us) |
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.TP |
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.BR "-e \fIesterror\fP" |
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Set the estimated error, in microseconds. |
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.TP |
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.BR "-f \fIfrequency\fP" |
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Set the frequency error (-500 .. 500), in parts per million. |
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.TP |
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.BR "-h" |
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Display help information. |
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.TP |
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.BR "-m \fImaxerror\fP" |
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Set the maximum possible error, in microseconds. |
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.TP |
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.BR "-o \fIoffset\fP" |
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Set the offset in microseconds. |
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.TP |
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.BR "-r" |
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Print the unix and NTP time raw |
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.TP |
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.BR "-s \fIstatus\fP" |
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Set the status bits. Do not use this unless you know what you are doing. |
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.TP |
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.BR "-t \fItimeconstant\fP" |
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Set the log2 of PLL time constant, an integer in the range 0-10. |
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.SH NOTES |
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.LP |
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The documentation available at /usr/share/doc/ntp is provided as is from the |
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\fBNTP\fR distribution and may contain information that is not applicable to |
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the software as provided in this partIcular distribution. |
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.PP |
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.SH SEE ALSO |
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.LP |
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\fBntpd\fR(1M), \fBattributes\fR(5) |